java - Elegant mapping from POJOs to vertx.io's JsonObject? -

i working on vertx.io application , wanted use provide mongo api data storage. have rather clunky abstraction on top of stock jsonobject classes get , set methods replaced things like:

this.backingobject.get(key_for_this_property); 

this , now, won't scale particularly well. seems dirty, when using nested arrays or objects. example, if want able fill fields when actual data known, have check if array exists, , if doesn't create , store in object. can add element list. example:

if (this.backingobject.getjsonarray(key_list) == null) {     this.backingobject.put(key_list, new jsonarray()); } this.backingobject.getjsonarray(key_list).add(p.getbackingobject()); 

i have thought potential solutions don't particularly of them. namely, could use gson or similar library annotation support handle loading object purposes of manipulating data in code, , using serialize , unserialize function of both gson , vertx convert between formats (vertx load data -> json string -> gson parse json pojos -> make changes -> serialize json string -> parse vertx , save) that's gross , inefficient workflow. come sort of abstract wrapper extends/implements vertx json library passes functionality through gson, seems lot of work.

is there way achieve more friendly , maintainable serialization using vertx?

not sure if i've understood correctly, sounds you're trying find simple way of converting pojos jsonobject?

so, have lots of pojos send on eventbus jsonobjects

i've found easiest way use vert.x json class has loads of helper methods convert / json strings

jsonobject jsonobject = new jsonobject(json.encode(mypojo); 

sometimes need add custom (de)serializers, stick jackson - vert.x using work out of box.

what do, provide interface following:

public jsonobjectserializable {     public jsonobject tojson(); } 

and our pojos need sent on eventbus have implement interface.

then our eventbus sending code looks (simplified):

public <t extends jsonobjectserializable> response<t> dispatch(t eventpayload); 

also, don't unit test pojos, adding interface encourages developers unit test conversion.

hope helps,

will